From fd96795630428ceca775bd1effc5bf41a9fe5272 Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Mon, 28 Apr 2008 02:15:30 -0700 Subject: gxfb/lxfb: detect framebuffer size using an MSR if VSA2 isn't available If there's no VSA2 (ie, if we're using tinybios or OpenFirmware), use the GLIU's P2D Range Offset Descriptor to determine how much memory we have available for the framebuffer. Originally based on a patch by Jordan Crouse. Tested with OpenFirmware; Pascal informs me that tinybios has a stub that fills in P2D_RO0. Signed-off-by: Andres Salomon Cc: Jordan Crouse Cc: "Antonino A. Daplas" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-x86/geode.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/asm-x86') diff --git a/include/asm-x86/geode.h b/include/asm-x86/geode.h index 4fb2f62e277..7154dc4de95 100644 --- a/include/asm-x86/geode.h +++ b/include/asm-x86/geode.h @@ -30,6 +30,8 @@ extern int geode_get_dev_base(unsigned int dev); /* MSRS */ +#define MSR_GLIU_P2D_RO0 0x10000029 + #define MSR_LX_GLD_MSR_CONFIG 0x48002001 #define MSR_LX_MSR_PADSEL 0x48002011 /* NOT 0x48000011; the data * sheet has the wrong value */ -- cgit v1.2.3